Chess South Africa Ratings Database

PLAYER PAGE

Personal

Weng, I (Ivan)

Chess SA id

1150148195

FIDE id

Date of birth

2015-09-06 (U12)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

25.7

Junior GPX Points

1169.6

Item	Main	Standard	Rapid	Blitz
Rating	1275.7	1212.5	1355.2	1200
Raw rating	1215.3	1146.1	1355.2	1200
Weighted rating	1275.7	1212.5	1321.8	1200
Weighted performance	1181.6	1122.5	1207.5	0
Floor	824.1	752.7	855.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	162.2	179	132.9	165.8
Highest rating	1324.1 2025-09-01	1252.7 2025-04-01	1355.2 2025-09-01	1200 2018-10-01
Highest raw rating	1324.1 2025-09-01	1252.7 2025-04-01	1355.2 2025-09-01	1200 2024-02-01
Highest weighted rating	1279 2025-09-30	1252.7 2018-10-01	1313.8 2025-09-01	1200 2018-10-01
Highest weighted performance	1309.4 2024-05-01	1200.9 2023-03-01	1337.1 2023-04-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-3.3	-3.3	0	0
New rating	1272.4	1209.2	1355.2	1200
Analysis
Rating	1275.7	1212.5	1355.2	1200
Raw rating	1215.3	1146.1	1355.2	1200
Weighted rating	1275.7	1212.5	1321.8
Weighted performance	1181.6	1122.5	1207.5
K-factor	36	36	36	36
Floor	824.1	752.7	855.2	700
Max/Min rating change allowed	162.2	179	132.9	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1215.3	1146.1	1355.2	1200
New weighted rating	1272.4	1209.2	1325.4	1200
New weighted performance	1174.5	1115.6	1199.3	0
Temp new rating	1272.4	1209.2	1355.2	1200
Temp new rating +/-	-3.3	-3.3	0	0
Final new rating +/-	-3.3	-3.3	0	0
New rating	1272.4	1209.2	1355.2	1200
New K-factor	36	36	36	36
New floor	824.1	752.7	855.2	700

Item	Main	Standard	Rapid
	0	0	0
	28	23	5
	38	21	17
	52	18	34
	6	6	0
	0	0	0
History	124	68	56

Games since
	Main 76	Standard 48		Rapid 28		Blitz 0
Gender	Male
Age group	U12
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3493		1147		157
Male	2697		844		113
U12	539		183		31
U12 Male	379		120		20
Standard
	RSA		Province		Region
Overall	3968		1134		155
Male	2985		785		99
U12	634		179		23
U12 Male	438		108		13
Rapid
	RSA		Province		Region
Overall	740		381		62
Male	616		318		47
U12	115		66		15
U12 Male	87		48		10
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	28	12.5	44.64	-45.5	1288.2	1242.7
Standard	23	8.5	36.96	-110.9	1297.9	1187
Rapid	5	4	80	255	1243.8	1498.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	124	59.5	47.98	-17.1	1240.1	1222.9
Standard	68	26.5	38.97	-93.8	1267.5	1173.7
Rapid	56	33	58.93	75.9	1206.8	1282.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1215.3	1146.1	1355.2	1200
2025-09-30	1278.7	1201.2	1355.2	1200
2025-09-01	1324.1	1252.7	1355.2	1200
2025-08-01	1296.1	1252.7	1315.9	1200
2025-07-01	1296.1	1252.7	1315.9	1200
2025-06-01	1296.1	1252.7	1315.9	1200
2025-05-01	1296.1	1252.7	1315.9	1200
2025-04-01	1296.1	1252.7	1315.9	1200
2025-03-01	1289.3	1236.1	1315.9	1200
2025-02-01	1276.3	1210.4	1315.9	1200
2025-01-01	1276.3	1210.4	1315.9	1200
2024-12-01	1276.3	1210.4	1315.9	1200
2024-11-01	1276.3	1210.4	1315.9	1200
2024-10-01	1276.3	1210.4	1315.9	1200
2024-09-01	1276.3	1210.4	1315.9	1200
2024-08-01	1263.5	1176	1315.9	1200
2024-07-01	1274.3	1179.6	1315.9	1200
2024-09-01	1274.3	1179.6	1315.9	1200
2024-05-01	1208.9	1116.8	1272.7	1200
2024-04-01	1208.9	1116.8	1272.7	1200
2024-03-01	1177.1	1093.6	1257.9	1200
2024-02-01	1172.6	1093.6	1279.1	1200
2024-01-01	1172.6	1093.6	1279.1	1200
2023-12-01	1172.6	1093.6	1279.1	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (E)	2025-08-16	2025-08-23	Standard	Cape Town (WCT)	6	2	0	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (Primary Schools)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	1.5	Yes	Analysis
3	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	1	Yes	Analysis
4	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Cape Winelands Schools Prestige 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	Cape Winelands Schools - Trials 1 2025 (U11 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (E)	2025-08-16	2025-08-23	Standard	Cape Town (WCT)	6	2	0	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (Primary Schools)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	1.5	Yes	Analysis
3	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	1	Yes	Analysis
4	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Cape Winelands Schools Prestige 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	Cape Winelands Schools - Trials 1 2025 (U11 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Western Cape Women�s Championship 2024 (U10)	2024-08-09	2024-08-09	Standard	West Coast (WCU)	5	0	0	No	Analysis
8	De Villiers PS Tournament 2024 (U10)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Cape Winelands - Top Schools 2024 (U7-U11 Mixed)	2024-07-24	2024-07-24	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
10	Robertson Strategema Chess May 2024 (U9)	2024-05-11	2024-05-11	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
11	Western Cape PS Individuals Championship 2024 (U9 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
12	Brave Knights 2024 (U9)	2024-03-16	2024-03-16	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
13	Cape Winelands Schools - Prestige 2024 (U9 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
14	Cape Winelands Schools - PS Trials 1 2024 (U9 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
15	2023 Western Cape Rural Cup (U10)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	0	Yes	Analysis
16	Ashton Skaakmat Rapid 2023 (U9)	2023-11-18	2023-11-18	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
17	Worcester Knock-Out 2023 (U9 Boys)	2023-10-14	2023-10-14	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
18	Western Cape Closed Championship 2023 (U10)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
19	Western Cape PS Individuals 2023 (U9 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
20	Steinitz Open 2023 (U10)	2023-05-27	2023-05-27	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
21	Midas Paints Chess Cup Term 2 2023 (U8)	2023-04-15	2023-04-15	Rapid	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
22	Cape Town Open 2023 (Rapid)	2023-03-26	2023-03-26	Rapid	Cape Town (WCT)	6	6	1	Yes	Analysis
23	Cape Winelands Schools Prestige 2023 (U9 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
24	Cape Winelands Schools Chess - Trials 1 2023 (U9 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	3	1.5	Yes	Analysis
25	Drakenstein Pioneers Club Championship 2022 (U14)	2022-09-20	2022-10-11	Standard	Cape Winelands (WCW)	7	6	0	Yes	Analysis

#	Games	Start				End
1	7	Tournament Worcester Knock-Out 2023				Tournament Ashton Skaakmat Rapid 2023
		date 2023-10-14	rnd 2	type Rapid	result 1	date 2023-11-18	rnd 2	type Rapid	result 1
		Opponent Matolengwe, L (Lemvana)				Opponent Van Der Bank, R (Recailinn)
2	6	Tournament Midas Paints Chess Cup Term 2 2023				Tournament Western Cape PS Individuals 2023
		date 2023-04-15	rnd 1	type Rapid	result 0.5	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Scheepers, A (Ava)				Opponent Abrahams, M (Marshal)
3	5	Tournament Western Cape PS Individuals Championship 2024				Tournament Robertson Strategema Chess May 2024
		date 2024-05-04	rnd 3	type Standard	result 1	date 2024-05-11	rnd 1	type Rapid	result 1
		Opponent Du Preez, J (Janco)				Opponent Nel, C (Curtly)

#	Games	Start				End
1	4	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-04	rnd 3	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Du Preez, J (Janco)				Opponent Geldenhuys, L (Liam)
2	4	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Zyl, A (Adam)				Opponent Abrahams, M (Marshal)
3	3	Tournament De Villiers PS Tournament 2024				Tournament Cape Winelands Schools - Trials 1 2025
		date 2024-08-17	rnd 5	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Coetzee, S (Sean)				Opponent Steenkamp, W (Wentzel)

#	Games	Start				End
1	7	Tournament Worcester Knock-Out 2023				Tournament Ashton Skaakmat Rapid 2023
		date 2023-10-14	rnd 2	type Rapid	result 1	date 2023-11-18	rnd 2	type Rapid	result 1
		Opponent Matolengwe, L (Lemvana)				Opponent Van Der Bank, R (Recailinn)
2	6	Tournament Robertson Strategema Chess May 2024				Tournament Cape Winelands Top Schools 2025
		date 2024-05-11	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Edons, M (Mihandro)				Opponent Grill, E (Eli)
3	5	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Brave Knights 2024
		date 2024-02-10	rnd 5	type Rapid	result 0.5	date 2024-03-16	rnd 3	type Rapid	result 1
		Opponent Ndebele, S (Sifiso)				Opponent Williams, M (Mackenzy)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Midas Paints Chess Cup Term 2 2023				Tournament Western Cape PS Individuals 2023
		date 2023-04-15	rnd 2	type Rapid	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Adams, L (Lo-Keisha)				Opponent Abrahams, M (Marshal)
2	4	Tournament Cape Winelands Schools - Prestige 2024				Tournament Brave Knights 2024
		date 2024-03-02	rnd 5	type Standard	result 1	date 2024-03-16	rnd 3	type Rapid	result 1
		Opponent Lee, M (Monreeq)				Opponent Williams, M (Mackenzy)
3	4	Tournament Worcester Knock-Out 2023				Tournament Worcester Knock-Out 2023
		date 2023-10-14	rnd 2	type Rapid	result 1	date 2023-10-14	rnd 5	type Rapid	result 1
		Opponent Matolengwe, L (Lemvana)				Opponent Goso, I (Izwi)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Zyl, A (Adam)				Opponent Abrahams, M (Marshal)
2	3	Tournament De Villiers PS Tournament 2024				Tournament Cape Winelands Schools - Trials 1 2025
		date 2024-08-17	rnd 5	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Coetzee, S (Sean)				Opponent Steenkamp, W (Wentzel)
3	2	Tournament Cape Winelands Schools Prestige 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Du Toit, S (Shaundre)				Opponent Jagers, Z (Zayd)

#	Games	Start				End
1	6	Tournament Robertson Strategema Chess May 2024				Tournament Cape Winelands Top Schools 2025
		date 2024-05-11	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Edons, M (Mihandro)				Opponent Grill, E (Eli)
2	4	Tournament Worcester Knock-Out 2023				Tournament Worcester Knock-Out 2023
		date 2023-10-14	rnd 2	type Rapid	result 1	date 2023-10-14	rnd 5	type Rapid	result 1
		Opponent Matolengwe, L (Lemvana)				Opponent Goso, I (Izwi)
3	4	Tournament Midas Paints Chess Cup Term 2 2023				Tournament Midas Paints Chess Cup Term 2 2023
		date 2023-04-15	rnd 2	type Rapid	result 1	date 2023-04-15	rnd 5	type Rapid	result 1
		Opponent Adams, L (Lo-Keisha)				Opponent Pretorius, L (Lukas)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Brandt ,T (Tyler)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Brandt ,T (Tyler)	3	1291.6	866.6	3	1261.2	866.6	0	0	0	0	0	0
2	Robertson ,M (Marvin)	3	0	-425	2	0	-425	1	0	-425	0	0	0
2	Robertson ,M (Marvin)	3	1452.6	1027.6	2	1336.2	1027.6	1	1531.2	1027.6	0	0	0
3	Da Silva ,N (Noah Clint)	3	2	141.7	1	1	425	2	1	0	0	0	0
3	Da Silva ,N (Noah Clint)	3	1214.7	1356.4	1	1225.3	1639.7	2	1164.1	1214.7	0	0	0
4	Viljoen ,A (Adrihan)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Viljoen ,A (Adrihan)	2	1366.9	941.9	2	1343.4	941.9	0	0	0	0	0	0
5	Steenkamp ,W (Willem)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Steenkamp ,W (Willem)	2	1246.8	1034.2	2	1124.2	1034.2	0	0	0	0	0	0
6	Kriel ,D (Daniel)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Kriel ,D (Daniel)	2	1206.3	781.3	2	1187.2	781.3	0	0	0	0	0	0
7	Small ,W (Wyatt)	2	1	0	1	0.5	0	1	0.5	0	0	0	0
7	Small ,W (Wyatt)	2	1220	1220	1	1170.8	1220	1	1219.9	1220	0	0	0
8	Africa ,F (Faithlynn)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Africa ,F (Faithlynn)	2	1268.1	843.1	1	1355.5	843.1	1	1223.2	843.1	0	0	0
9	Harman ,C (Connor)	2	1	0	1	0	-425	1	1	425	0	0	0
9	Harman ,C (Connor)	2	1349.2	1349.2	1	1308	924.2	1	1335.5	1774.2	0	0	0
10	Van Wyk ,M (Micaile)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Van Wyk ,M (Micaile)	2	1432.6	1007.6	1	1370.2	1007.6	1	1405.4	1007.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Weng, I (Ivan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms